Grid catalyst support device and fixed bed hydrogenation column thereof
Patent Information
- Application Number
- CN202522295374.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-30
AI Technical Summary
这种不均匀的催化剂分布导致反应物料(液体物料)在通过床层时，流速分布不均匀，部分区域的物料与催化剂接触不充分，氢化反应效率低；同时，局部催化剂过度堆积还增加液体物料的流通阻力，甚至引发床层堵塞风险，影响固定床氢化塔的稳定运行
[0053]1.通过设置支撑栅板和圆锥块，使得向栅格式催化剂支撑装置投加催化剂的过程中，催化剂首先被支撑栅板初步分流，以分散的方式(而不是成堆的方式)向栅格网掉落，而且在落在栅格网的上表面之前，被设置在栅格网上的圆锥块导流，进一步被分散，最终均匀地平铺在栅格网上，解决了传统栅格网上催化剂分布不均的问题。
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Figure CN224865403U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a grid-type catalyst support device and a fixed-bed hydrogenation tower containing at least one such grid-type catalyst support device. Background Technology
[0002] Hydrogen peroxide, also known as hydrogen peroxide solution, is an important green chemical product. Because it does not pollute the environment during use, it is widely used as an oxidant, bleaching agent, and disinfectant in industries such as chemical, papermaking, environmental protection, and electronics. Currently, hydrogen peroxide is produced using the anthraquinone process, which includes hydrogenation, oxidation, extraction, and purification steps. Depending on the hydrogenation reactor, hydrogen peroxide production processes are divided into fixed-bed and fluidized-bed processes. For the fixed-bed process, the fixed-bed hydrogenation tower is the core equipment in the hydrogen peroxide production process, used to realize the hydrogenation reaction in the anthraquinone process. Its reaction efficiency and operational stability directly determine the production quality and yield of hydrogen peroxide. A fixed-bed hydrogenation tower typically includes the following components:
[0003] The hydrogenation tower body, as the core container of the hydrogenation reaction, provides a closed and stable space for the reaction, while bearing the pressure, temperature and other working loads during the reaction process. It must have good corrosion resistance and structural strength.
[0004] The catalyst support device is used to support the catalyst required for the hydrogenation reaction, ensuring that the catalyst is in a reasonable distribution state within the tower and providing conditions for sufficient contact between the reactants and the catalyst.
[0005] A stirring device is used to ensure that the reactants (such as hydrogen and anthraquinone working solution) entering the tower are evenly dispersed, avoiding excessively high or low local material concentrations that could affect reaction efficiency.
[0006] The heat exchange device is used to remove or replenish the heat generated during the reaction in a timely manner, maintain the reaction temperature inside the tower within the optimal range, and ensure that the reaction continues to proceed efficiently.
[0007] For catalyst support devices, grid-type support mesh is a commonly used structure. It is used to support granular or sheet-like catalysts, preventing them from falling off while ensuring that reactants can pass smoothly through the catalyst bed for reaction. Grid-type support mesh is usually made of metal and forms a mesh structure through multiple sets of parallel or intersecting bars. The mesh size needs to be designed according to the catalyst particle size to balance support stability and material flow.
[0008] In the actual production of hydrogen peroxide, existing technologies using grid-type support meshes often result in uneven catalyst distribution due to the obstruction of the grid bars. During catalyst filling (addition), catalyst tends to accumulate at the junctions of the grid bars or meshes, while some central areas of the meshes are underfilled, creating voids. This leads to areas of both excessively high and excessively low catalyst density in the catalyst bed. This uneven catalyst distribution causes uneven flow velocity distribution of the reactants (liquid materials) as they pass through the bed, resulting in insufficient contact between the material and the catalyst in some areas and low hydrogenation efficiency. Furthermore, excessive local catalyst accumulation increases the flow resistance of the liquid materials and may even lead to bed blockage, affecting the stable operation of the fixed-bed hydrogenation tower. Utility Model Content
[0009] In view of the problems existing in the grid-type catalyst support devices reported in the prior art, this utility model provides a novel grid-type catalyst support device, which can avoid the phenomenon of uneven catalyst distribution during the catalyst filling process.
[0010] To achieve the above objectives, this utility model provides the following technical solution:
[0011] A grid-type catalyst support device, the grid-type catalyst support device comprising:
[0012] A grid, used to support the catalyst, has an upper surface and a lower surface, the upper surface contacting the catalyst.
[0013] Multiple conical blocks are evenly distributed on the upper surface of the grid.
[0014] A support grid plate, positioned above the grid mesh, provides support for the grid-type catalyst support device, making it more stable, and also facilitates the initial diversion (dispensing) of catalyst onto it, causing the catalyst to disperse and fall onto the upper surface of the grid mesh.
[0015] A rotating bar, which is disposed on the support grid plate, causes the catalyst remaining on the support grid plate to fall onto the upper surface of the grid by rotating.
[0016] In another preferred embodiment, the bottom of the conical block is fixed to the upper surface of the grid, with a distance of 0.1 to 1.0 cm, and its density on the grid is 2 to 10 blocks per square centimeter.
[0017] In another preferred embodiment, the grid-type catalyst support device further includes a connecting rod for fixing the grid and the support grid plate together.
[0018] In another preferred embodiment, the grid-type catalyst support device further includes mounting protrusions disposed on the grid for fixing the grid to the inner wall of the fixed-bed hydrogenation tower.
[0019] In another preferred embodiment, the grid-type catalyst support device further includes a handle disposed on the support grid plate.
[0020] In another preferred embodiment, the edge of the grid is fixed by a fixing frame, and one end of the connecting rod is disposed on the fixing frame, and the mounting protrusion is disposed on the side wall of the fixing frame.
[0021] In another preferred embodiment, the number of connecting rods is 3 to 8.
[0022] In another preferred embodiment, the number of mounting bumps is 3 to 8.
[0023] In another preferred embodiment, the number of handles is two.
[0024] The present invention also provides a fixed-bed hydrogenation tower, which includes at least one of the above-described grid-type catalyst support devices.
[0025] In another preferred embodiment, the fixed-bed hydrogenation tower further includes a fixed-bed hydrogenation tower body, a sealing cover, an air inlet pipe, a liquid inlet pipe, a discharge pipe, and a stirring device.
[0026] In another preferred embodiment, the sealing cap is installed on top of the fixed-bed hydrogenation tower body to seal the opening of the fixed-bed hydrogenation tower body.
[0027] In another preferred embodiment, the air inlet pipe and the liquid inlet pipe are disposed at the upper end of the fixed bed hydrogenation tower body.
[0028] In another preferred embodiment, the discharge pipe is disposed at the lower end of the fixed-bed hydrogenation tower body.
[0029] In another preferred embodiment, the stirring device includes a stirring rod and a motor, the stirring rod being disposed inside the fixed-bed hydrogenation tower body, and the motor being disposed at the bottom of the fixed-bed hydrogenation tower body.
[0030] In another preferred embodiment, the discharge pipe is provided with a filter cover and a valve.
[0031] In another preferred embodiment, the inlet pipe is provided with a volume control funnel.
[0032] In another preferred embodiment, the air intake pipe is equipped with a gas flow controller.
[0033] In another preferred embodiment, the inner wall of the fixed-bed hydrogenation tower body is provided with a groove for placing the mounting protrusion of the grid catalyst support device, so that the grid catalyst support device is fixedly installed inside the fixed-bed hydrogenation tower body. Attached Figure Description
[0034] To more clearly illustrate the technical solutions of the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly introduced below. In all the drawings, the elements or components are not necessarily drawn to scale.
[0035] Figure 1 This is a top view of the fixed-bed hydrogenation tower of this utility model;
[0036] Figure 2 This is a front view of the fixed-bed hydrogenation tower of this utility model;
[0037] Figure 3 This is a schematic diagram of the internal structure of the fixed-bed hydrogenation tower of the present invention, which includes a grid-type catalyst support device.
[0038] Figure 4 This is a schematic diagram of the structure of the grid-type catalyst support device of this utility model;
[0039] Figure 5 for Figure 4 A magnified schematic diagram of a portion of region A in the diagram.
[0040] Figures 1 to 5 In the middle: 1—Fixed bed hydrogenation tower body, 2—Sealing cover, 3—Gas inlet pipe, 31—Gas flow controller, 4—Liquid inlet pipe, 41—Quantity control funnel, 5—Grid catalyst support device, 51—Grid, 511—Conical block, 512—Fixing frame, 52—Support grid plate, 521—Rotating bar, 522—Pull handle, 53—Connecting rod, 54—Mounting protrusion, 11—Groove, 6—Discharge pipe, 61—Filter cover; 7—Stirring device, 71—Stirring rod motor, 72—Motor. Detailed Implementation
[0041] In the description of this utility model, directional terms such as "upper" and "lower" are understood in accordance with the conventional way in the art.
[0042] In a preferred embodiment of the present invention, the novel grid-type catalyst support device includes a grid, a support grid plate, a connecting rod, and mounting protrusions. The grid has conical blocks on its upper surface, and the support grid plate is fixedly connected to the grid via the connecting rod. The support grid plate also has a rotating bar and a handle.
[0043] In a preferred embodiment of the present invention, both the grid and the supporting grid plate are circular in shape.
[0044] The support grid serves two purposes: firstly, it supports the grid-type catalyst support device, making the overall device more robust; secondly, it provides initial diversion of the catalyst added to it. The catalyst added to the support grid is dispersed and falls onto the grid through its gaps, preventing catalyst from piling up on the grid. The rotating bars on the support grid easily sweep away any remaining (residual) catalyst from the surface of the support grid and into the grid.
[0045] Multiple cone-shaped blocks are used, their bottoms fixed to the upper surface of the grid, serving to guide the falling catalyst. As the catalyst falls from the supporting grid onto the grid, it first contacts the tip of the cone block, then rolls down the side of the cone block onto the upper surface of the grid. In this way, the added catalyst undergoes initial diversion by the supporting grid and then is guided by the cone blocks, ensuring even distribution on the grid. This avoids excessive catalyst accumulation in localized areas of the grid (leading to increased resistance to liquid flow and the risk of bed blockage) or insufficient catalyst filling in localized areas, creating voids (resulting in insufficient contact between the reactants and catalyst, reducing hydrogenation efficiency). The height of the cone blocks and their unit number (density) on the upper surface of the grid can be adjusted according to the particle size of the catalyst used. Typically, when a grid is used to support larger catalyst particles, the cone blocks are taller (e.g., 0.5–1 cm) and less dense (e.g., 2–4 particles / cm²); when a grid is used to support smaller catalyst particles, the cone blocks are shorter (e.g., 0.1–0.3 cm) and more dense (e.g., 5–10 particles / cm²).
[0046] In a preferred embodiment of the present invention, the supporting grid plate and the grid mesh are fixedly connected together by a plurality of connecting rods. One end of the connecting rod is disposed on the fixing frame of the grid mesh, and the other end is disposed on the supporting grid plate.
[0047] In a preferred embodiment of the present invention, mounting protrusions are provided on the sides of the grid. By placing the mounting protrusions into corresponding grooves provided on the inner wall of the fixed-bed hydrogenation tower, the grid-type catalyst support device is fixedly installed inside the fixed-bed hydrogenation tower. This structure is convenient to operate and has low equipment cost. The structure and arrangement of the mounting protrusions and grooves can follow conventional structures and arrangements in the art.
[0048] In a preferred embodiment of the present invention, the support grid plate is provided with a handle, which is used by the operator to hold the grid-type catalyst support device when installing or removing it.
[0049] In a preferred embodiment of the invention, the edges of the grid are fixed by a fixing frame, making the grid more robust. Furthermore, one end of the connecting rod on the grid is mounted on the fixing frame, preventing the connecting rod from affecting the uniform distribution of the catalyst. Mounting protrusions are also provided on the side of the fixing frame.
[0050] The fixed-bed hydrogenation tower provided by this utility model includes at least one of the novel grid-type catalyst support devices described above. Since the catalyst supported by the grid-type catalyst support device has a limited capacity, the number of grid-type catalyst support devices installed in the fixed-bed hydrogenation tower can be adjusted according to the amount of catalyst used during operation, for example, 1, 2, 3, 4, etc.
[0051] Other components of the fixed-bed hydrogenation tower, such as the sealing cap, air inlet pipe, liquid inlet pipe, discharge pipe, and stirring device, can be arranged in accordance with the manner disclosed in the art or in accordance with the manner disclosed in this utility model.
[0052] Compared with the prior art, the grid-type catalyst support device provided by this utility model has the following advantages:
[0053] 1. By setting up support grids and conical blocks, during the process of adding catalyst to the grid-type catalyst support device, the catalyst is first initially diverted by the support grids and falls onto the grid in a dispersed manner (rather than in a pile). Moreover, before falling onto the upper surface of the grid, it is guided by the conical blocks set on the grid and further dispersed, and finally evenly spread on the grid, thus solving the problem of uneven catalyst distribution on traditional grids.
[0054] 2. By setting up support grid plates, connecting rods, mounting protrusions and pull handles, the grid-type catalyst support device of this utility model is made sturdy as a whole, and can be disassembled and assembled without complicated tools, making the maintenance process simple.
[0055] 3. The fixed-bed hydrogenation tower with a grid-type catalyst support device provided by this utility model ensures the gas-liquid material ratio by setting a gas flow controller at the gas inlet pipe and a flow control funnel at the liquid inlet pipe; and avoids solid impurities in the discharged liquid by setting a filter cover at the discharge pipe.
[0056] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0057] Example 1
[0058] Figure 1 , Figure 2 and Figure 3 The fixed-bed hydrogenation tower shown includes a fixed-bed hydrogenation tower body 1, a sealing cover 2, an inlet pipe 3, a liquid inlet pipe 4, a grid-type catalyst support device 5, an outlet pipe 6, and a stirring device 7.
[0059] The fixed-bed hydrogenation tower body 1 is the reaction vessel for producing hydrogen peroxide using the anthraquinone process. It has an opening at the top and a groove 11 on the inner wall of the upper end. During use, a sealing cap 2 is installed on top of the fixed-bed hydrogenation tower body 1 to seal the opening, preventing hydrogen leakage and the entry of external impurities, ensuring a sealed reaction environment. The sealing cap 2 can be removed when filling catalyst or maintaining equipment. The gas inlet pipe 3 and liquid inlet pipe 5 are used to introduce hydrogen gas and add liquid materials to the fixed-bed hydrogenation tower body 1, respectively. To facilitate control of the amount of hydrogen and liquid materials added, the gas inlet pipe 3 and liquid inlet pipe 4 are respectively equipped with a gas flow controller 31 and a flow control funnel 41. The gas flow controller 31 is used to precisely control the flow rate of hydrogen gas entering the fixed-bed hydrogenation tower body 1 through the gas inlet pipe 3, and can adjust the hydrogen inlet rate in real time according to process parameters to maintain the optimal ratio of hydrogen to liquid materials. This avoids waste and safety risks caused by excessive hydrogen, as well as incomplete reaction caused by insufficient hydrogen. The control funnel 41 is a graduated metering component used to measure the amount of liquid material entering the fixed-bed hydrogenation tower body 1 through the inlet pipe 4. Operators can precisely control the amount of liquid material added to the fixed-bed hydrogenation tower body 1 using the control funnel 41, simplifying metering operations. Both the gas inlet pipe 3 and the liquid inlet pipe 4 are located at the upper end of the fixed-bed hydrogenation tower body 1 (near the opening). Figures 1 to 3 In the structural schematic diagram shown, the gas inlet pipe 3 and the liquid inlet pipe 4 are located on opposite sides of the fixed bed hydrogenation tower body 1.
[0060] A grid-type catalyst support device 5 is provided to support the catalyst used in the reaction. The discharge pipe 6 is located at the lower end of the fixed bed hydrogenation tower body 1 (the end near the bottom of the fixed bed hydrogenation tower body) and is used to discharge the hydrogen peroxide generated in the fixed bed hydrogenation tower body 1. Its opening is provided with a filter cover 61 to filter solid impurities and prevent them from entering the discharged hydrogen peroxide.
[0061] A grid-type catalyst support device 5 is installed inside the fixed-bed hydrogenation tower body 1, located at the upper end of the fixed-bed hydrogenation tower body 1, and includes a grid 51 and a support grid plate 52. Figure 3 and Figure 4In the structure shown, both the grid 51 and the supporting grid plate 52 are circular and are fixedly connected together by connecting rods 53. The number of connecting rods 53 can be several, for example, 3, 4, 5, 6, 7, or 8. The grid 51 is used to support the catalyst used in the reaction. The supporting grid plate 52 is made of a high-strength material, serving both a supporting function to make the grid-type catalyst support device 5 more robust, and a preliminary diversion function for the added catalyst. When adding the catalyst, it is first placed on the supporting grid plate 52 and then dispersed through the gaps in the supporting grid plate 52 onto the upper surface of the grid 51, preventing it from accumulating. A rotating bar 521 is also provided on the supporting grid plate 52. One end of the rotating bar 521 is located at the center of the circular supporting grid plate 52, and the other end is free. When the rotating bar 521 rotates, it sweeps away any remaining catalyst on the supporting grid plate 52, causing it to fall onto the grid 51. The support grid plate 52 is also equipped with a handle 522, which is used by the operator to hold the grid-type catalyst support device 5 when disassembling it.
[0062] Multiple conical blocks 511 are arranged on the upper surface of the grid 51. For example, the conical blocks 511 are arranged at a density of 2 to 10 per cm. 2 The density distribution is on the upper surface of the grid 51. The bottom of the cone block 511 is fixed to the upper surface of the grid, with its tip pointing upwards. The height of the cone block can be 0.1 to 1.0 cm. Part of the catalyst that falls from the support grid plate 52 first contacts the tip of the cone block 511 and rolls down the side of the cone block 511 onto the upper surface of the grid 51, thus spreading into a uniform layer on the upper surface of the grid 51.
[0063] The edges of the grid 51 are fixed by a fixing frame 512. The fixing frame 512 serves two purposes: firstly, it increases the strength of the grid 51, preventing it from deforming under the pressure of the catalyst; secondly, it provides a connection point for the connecting rod 53 (see [link]). Figure 5 In other words, one end of the connecting rod 53 is fixedly connected to the fixing frame 512, and the other end is fixedly connected to the support grid plate 52. The side of the fixing frame 512 is also provided with mounting protrusions 54 (see...). Figure 5 The mounting protrusion 54 can be placed in the groove 11 on the side wall of the fixed bed hydrogenation tower body 1, so that the grid-type catalyst support device 5 is fixedly placed at the upper end (near the opening) of the fixed bed hydrogenation tower body 1. The number of protrusions 14 is several, for example, 3, 4, 5, 6, etc., and they are evenly distributed on the side of the fixing frame 512.
[0064] The stirring rod 71 of the stirring device 7 is located inside the fixed-bed hydrogenation tower body 1, below the grid-type catalyst support device 5. One end of the stirring rod 71 is fixedly connected to the output end of the motor 72. The motor 72 is located at the bottom of the fixed-bed hydrogenation tower body 1. When energized, the motor drives the stirring rod 71 to rotate, stirring the hydrogen and liquid materials inside the tower, so that the hydrogen is evenly dispersed in the liquid materials, accelerating the reaction process, while avoiding local overheating and maintaining a stable reaction temperature.
[0065] The process of using the fixed-bed hydrogenation tower of this invention is as follows:
[0066] First, the operator removes the sealing cap 2 from the fixed-bed hydrogenation tower body 1. Holding the handles 522 on both sides of the support grid plate 52, the operator inserts the grid-type catalyst support device 5 into the fixed-bed hydrogenation tower body 1. When the mounting protrusion 54 precisely matches and snaps into the groove 11 on the inner wall of the fixed-bed hydrogenation tower body 1, the installation and fixation of the grid-type catalyst support device 5 is complete. Then, the catalyst is placed on the support grid plate 52. Most of the catalyst passes directly through the gaps in the support grid plate 52 and scatters onto the grid 52. Before falling onto the upper surface of the grid 51, the catalyst first contacts the conical block 13 on the upper surface of the grid 52, and then slides down the side of the conical block 13 to various areas of the grid 52, spreading evenly on the upper surface of the grid 51. For the small amount of residual catalyst that does not fall off the support grid plate 52, the operator can sweep it onto the upper surface of the grid 51 by rotating the rotating bar 521 on the support grid plate 52.
[0067] If two or more grid-type catalyst support devices 5 need to be installed inside the fixed-bed hydrogenation tower body 1, repeat the above operation in sequence.
[0068] After the catalyst is filled into the grid-type catalyst support device 5, the sealing cap 2 is closed, and hydrogen gas is introduced into the fixed-bed hydrogenation tower body 1 through the gas inlet pipe 3. At the same time, liquid material is added into the fixed-bed hydrogenation tower body 1 through the liquid inlet pipe 5. During the process of introducing hydrogen gas through the gas inlet pipe 3, the hydrogen flow rate can be adjusted by the gas flow controller 31. During the process of adding liquid material, the liquid material can be added into the flow control funnel 6 first. After the flow control funnel 6 accurately controls the amount, it enters the solid-bed hydrogenation tower body 1 through the liquid inlet pipe 5. During the process of entering the solid-bed hydrogenation tower body 1, both hydrogen gas and liquid material pass through the support grid plate 52 and the grid mesh 51 in sequence and flow to the lower end of the fixed-bed hydrogenation tower body 1.
[0069] After feeding is completed, the motor 72 is started, and its output end drives the stirring rod 71 to rotate inside the fixed bed hydrogenation tower body 1, stirring the hydrogen and liquid materials. The hydrogen peroxide generated by the reaction is discharged through the discharge pipe 6, and is filtered by the filter cover 61 on the discharge pipe 6 during the discharge process.
[0070] The grid-type catalyst support device 5 used in the fixed-bed hydrogenation tower of this invention has a supporting grid plate 52 for initial catalyst diversion and a conical block 511 for guiding catalyst flow. This ensures that the added catalyst is evenly distributed on the upper surface of the grid 51, and the hydrogen and liquid materials flow at a uniform velocity when passing through the catalyst layer, reducing the risk of blockage. Both hydrogen and liquid materials have sufficient contact with the catalyst, resulting in high hydrogenation reaction efficiency.
[0071] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A grid-type catalyst support device, characterized in that, The grid-type catalyst support device includes: A grid, used to support the catalyst, has an upper surface and a lower surface, the upper surface contacting the catalyst. Multiple conical blocks are evenly distributed on the upper surface of the grid. A support grid plate, positioned above the grid, provides support for the grid-type catalyst support device, making it more stable, and also initially diverts the catalyst added to it, causing the catalyst to disperse and fall onto the upper surface of the grid. A rotating bar, which is disposed on the support grid plate, causes the catalyst remaining on the support grid plate to fall onto the upper surface of the grid by rotating.
2. The grid-type catalyst support device according to claim 1, characterized in that, The bottom of the conical block is fixed to the upper surface of the grid, with a height of 0.1 to 1.0 cm and a density of 2 to 10 blocks per square centimeter on the grid.
3. The grid-type catalyst support device according to claim 1 or 2, characterized in that, The grid-type catalyst support device further includes a connecting rod for fixing the grid and the support grid plate.
4. The grid-type catalyst support device according to claim 3, characterized in that, The grid-type catalyst support device also includes mounting protrusions disposed on the grid for fixing the grid onto the inner wall of the fixed-bed hydrogenation tower.
5. The grid-type catalyst support device according to claim 4, characterized in that, The grid-type catalyst support device also includes a handle, which is disposed on the support grid plate.
6. The grid-type catalyst support device according to claim 4, characterized in that, The edge of the grid is fixed by a fixed frame, and one end of the connecting rod is disposed on the fixed frame, and the mounting protrusion is disposed on the side wall of the fixed frame.
7. The grid-type catalyst support device according to claim 5, characterized in that, The number of connecting rods is 3 to 8, and / or The number of mounting protrusions is 3 to 8, and / or The number of handles is 2.
8. A fixed-bed hydrogenation tower, characterized in that, It includes at least one grid-type catalyst support device as described in any one of claims 1-6.
9. The fixed-bed hydrogenation tower according to claim 8, characterized in that, The fixed-bed hydrogenation tower also includes the fixed-bed hydrogenation tower body, sealing cover, gas inlet pipe, liquid inlet pipe, discharge pipe, and stirring device. The sealing cap is installed on the top of the fixed-bed hydrogenation tower body to seal the opening of the fixed-bed hydrogenation tower body. The gas inlet pipe and the liquid inlet pipe are located at the upper end of the fixed-bed hydrogenation tower body. The discharge pipe is located at the lower end of the fixed-bed hydrogenation tower body. The stirring device includes a stirring rod and a motor. The stirring rod is located inside the fixed bed hydrogenation tower body, and the motor is located at the bottom of the fixed bed hydrogenation tower body.
10. The fixed-bed hydrogenation tower according to claim 9, characterized in that, The discharge pipe is equipped with a filter cover and a valve. The inlet pipe is equipped with a volume control funnel, and The air intake pipe is equipped with a gas flow controller.